<!DOCTYPE html>
<html>
<head>
    <script src="jquery/jquery-3.1.1.min.js"></script>
    <script src="lib/jQuery.md5.js"></script>
    <script type="text/javascript" src="js/normal.js"></script>
    <script type="text/javascript" src="js/ajax.js"></script>
    <script type="text/javascript" src="js/second.js"></script>
</head>
<body>
<p id="p1">如果点击“隐藏”按钮，我就会消失。</p>
<button id="hide" type="button">隐藏</button>
<button id="show" type="button">显示</button>
</body>
</html>
